Multiple choice general knowledge math & puzzles 2,6,12,20,xValue of x? 24 25 28 30 36 40 Reveal answer Fill a bubble to check yourself D Correct answer Explanation The sequence is generated by the formula $n^2 + n$ for $n = 1, 2, 3, 4, 5$. Specifically: $1^2+1=2$, $2^2+2=6$, $3^2+3=12$, $4^2+4=20$. The next term for $n=5$ is $5^2+5=30$. Distractors represent incorrect pattern assumptions.